Using a French employer-employee longitudinal dataset for 1976-1996, I present the first direct evidence from workers' employment histories suggesting that job opportunities decline with age and that there is a connection between longer nonemployment duration and limited job opportunities for older workers. This evidence is in the form of segregation curves and indexes that show a more limited set of industry/occupation cells in new jobs compared to old jobs for older workers whose nonemployment spells exceed one year, and no or moderate change in job opportunities for older workers with shorter spells and younger workers with short and long nonemployment spells.